Door-lock.



J. -W. GIEMMER, A. ROSENDAHL & A. N. HALVORSON.

Doo@ 1.00K. APPLICATION FILED JUNE 15, 1914.

2 SHEETS-SHEET 1.

Patented Jan. 12, 1915.

5mm/tow n J. WGLEMMER, A. ROSENDAHL & A. N. HALVORSON.-

. DooR LOCK.

APPLICATION FILED JUNE 15, 1914.

2 SHEETS-SHEET Z.

v Patented Jan. 12, 1915'.`

' ED OFFCE? JAMES w. cLEMMnB., ANDREW nosENDAHL, AND.ALBnnTmgHanvcgscNj/QE FARGoj-l* f NORTH DAKOTA.

To all whom may concern Be it knownthat- We, JAMES W. CLEMMER, ANDREWRosENDAHL, andA ALBERT N. HAL- voRsoN, citizens' of the United States,resid-.

ing at Fargo, in the county of Cass and State of North Dakota, haveinventedv certain new .and useful' Improvements in Door- Locks; and wedo declare the followingto be a full, clear, and exact description oftheinvention, such as-will enable others skilled in the art to which itappertains to make and use the samef Our invention relates toimprovements in door locks and hasfor its primary vobject to provide adevice of this 'character so-cony to construct the device in the vmostsimple manner consistent with -its proper operation,

With these objects in view, the invention vresides incertain novelfeatures of construction and combination herein described and claimedand shown in 'the drawings through a portion' of a door showing a planview of our improved lock, the means for locking the latch bolt being ininoperativeposition;' Fig. 2 is a similar view with parts broken awayand in section and showing the boltl locked against movement Fig. 3 is ahorizontal section ythrough the door and lock, showing more particularlythe construction` of the' latter; Fig. 4 isa vertical` transversesectional view taken on the line 4--4 of Fig. 3; Fig. 5 is averticalsection taken on the line 5-5 ofFig.-3; Fig. 6 is f a plan view of thebolt; and Fig. 7 is a perspective view of the form of key employedA inconnection with'the lock.

`In the accompanying drawings, we have shown' our invention as appliedto 'a' door D in the outer edge of which a suitable bore* fB is formedfor its reception. The bore B 'is provided to receive a rectangularsleeve `1 which inclosesa latchA `bolt v2, said latch i bolt being ofrectangular formation in cross Doon-LOCK;

Speoication of Letters Patent.

` section and b'eing'provided with ajlateral slot 3 which extendsoutwardly from its inner end and terminates adjacent a beveled head 4,the latterprojecting beyond a face platef to which the Asleevel issecured and by the door frame F.

As most clearly seen in Fig. 3, ,an antibeing adapted to engage a keeper7 carried 'friction roller 8 is revolubly mounted within.. the slot 3near the inner end of the bolt 2, said-roller contacting with the innerwalls l Patented Jan. 12, 1915. Application vled June 15, 191,4. SerialNo.A 845,205. l i I of the sleeve l and therefore facilitating thelnward and outward movement of the bolt.

Spaced a' suitable distance from the roller 8 and inclos'ed entirelywithin the slot 3, is an anti-friction roller 9 with which a camretracting the bolt, said bolt being normally projected 'by means of acoil' spring 11 which has its inner end secured to a pin 12 whichprojects across the slot 3 near its outer end, said pin also acting as astop in a manner to appear. The outer end of the spring vl() is adaptedto contact for the purpose of 11 is provided with a. hook 13 which isreceived by a substantially V-shaped slot14` formed in the outer end ofthe sleeve 1. It

Thegcam l0 is formed integrally with a.,v rectangular operating rod 15,saidrodpassing :slidably through 'registering'openings in the .sleeveland-the adjacent portions of i the door D and carrying, on its oppositeends, operating knobs 16, each of saidknobs comprisingI an inner section17 f and .an outer section 18, the-sections 17 4including cylindricalportions .in which the oppositeends ends, ofthe bores receiving said rodbeing enlarged as at 19 for the urpose of receiving the inner end -ofaey 20, thelatter beingada'pted .to be passed through a revolublymounted member 21 which is carried by the'outer section 18, said outersection Aof the rod 15 are rigidly keyed, the outer y loo being securedto the innersection by means n of fastening screws 22-which arepreferably v hidden'from view by counter sinking their heads andproviding suitable plugs which v lie flush with vthe outer surface'ofthe'knob.

lAs clearly shown in the drawings -the inner ends of the cylindricalportions of, the knobs vare slidably mounted- `yin guard sleeves 23 45 jmeans nowto be described., The oppositel Y end portion of the rod 25from thathaving vwhich,.through the instrumentalityy ofat-- tachingplates 24, are rigidly secured to thev door. 5 l' With the partsarranged as heretofore described, it will be seen that .when lateralmovement is imparted'to the operating'r'od 15, in the proper direction,theangularly -disposed face of the cam 10, contacting with l the roller9, will cause the latch bolt 2 to be retracted against the tensionof itsspring 11.

i This inward movement ofthe latch bolt is now limited bythe pin 12which, when the proper amount of inward movement has vbeen imparted tosaid bolt, contacts with the rod 15. y

As is .usual with devices of this character, it is essential to providemeans whereby the latch bolt may be locked against movement,

said means` being here shown in the form of a rectangular locking rod25, said ro'd being slidably mounted in a rectangular guideway 26 whichis formed in the upper side of the rod 15; The locking rod 2 5 isprovided, at each end, with a recess 27 in which a suitable-projection28, formed on the key 20,- is adapted to be forced', thereby allowingsaid operating rod to be shifted within the guideway 26, this .shiftingmovement causing a stop 29, rising rigidly from the rod to engageor-disengage a notch which is formed in one of the upper edges of theboa 2. n win ums be Seen that when said stop 29 is engaged with thenotch 30, the bolt' 2 will be locked against inward 4movement. It willbe further seen that when said locking bar 25 v'is shifted to disengage"the stop 29 from the notch 30, the bolt 2 is free to move inwardly whenthe rod 15 is moved in the proper direction.

By coming in contact with the inner wall of the notch 30, the stop 29 islimited against movement in one direction and thereby the locking rod islimited in its movement. In order to prevent excessive movement of saidrod in the opposite direction, we provide the 'stop 29, is provided witha depending stop 29:L which is adapted to slide inwardly i in a notch30a which is formed inthe lower side ofthe bar 15 and which communicateswith the groove or guideway '26.' It will thus be seen thatexcessivemovement of the rod in the opposite direction, is limited.

For the purpose of preventing casual shifting of the locking bar 25, weprovide a stud 31 which is slidably mounted'in a re cess`32, formed inthe cam 10 and communieating with the guideway 26, said stud beingnormally projected by a coil spring 33 interposed between its inner endand the inner4 wall of said opening. As most clearlytseen in lFig. 3,the stud 31 is adapted to .engage either one of a pair of sockets 34vwhich are formed in the adjacentvside of the locking bar, therebyholding the latter in either one ofitsadjusted positions. I

From the foregoing description, talzen in connection with theaccompanying drawings, it will be seen that we have produced anextremely simple lock and have provided ei'licient and inexpensive meanswhereby the latch bolt may be locked against movement vand thatthepositioning of the pin 12, performing the double function ofanchoring the spring 11 and forming a stop foi-.limiting the inwardmovement ofthe latch bolt 2, simplifies the structure and is a salientfeature.

Having thus described our invention, what we claim as new and desire tosecure by Letters Patent is 1. In a device o f 4the character described,a latch bolt and a bolt operating rod slidable in intersecting planes,means whereby reslidably supportedby the operating rod and having astop, and means whereby the locking rod may be moved to position itsstop in or out of the path of the stop on the bolt,

,to lock the bolt against inward movement.

3. In-,a device o'f the character described, a latch bolt and anoperating rod slidable in intersecting planes, means wherebyreciprocation ofthe latter will be`imparted to the former, a stop on thebolt, a locking rod slidable within the operating rod and having a stop,and means whereby the locking rod may be moved to'position its stop inor out ofthe' path of the 'stop on the bolt, to.

lock Ithe bolt against inward movement.

` 4. In a dev-ice of the character described, a latch bolt and anoperating rod slidable in intersecting planes, means wherebyreciprocation ofthe latter will be imparted to. the former, a stop onthe b olt, a guideway on the operating rod, a locking vrod i slidableinthe guidewaygand having a stop,

and means whereby the locking rod may be moved to position its stop inor out of the path of 'the stop onv the bolt, to lock the bolt againstinward movement.

5. In a device of the character described, a vlatch bolt anda'longitudinally grooved operating rod slidable in intersecting planes,

`means whereby lreciprocation of the latter will be imparted to theformer, a stop on i the bolt, a'locking rod slidable in the groove ofthe operating rod and having a stop,

von the bolt, a locking rod slidable vinthe groove and contacting withone of the walls of the slot, a stop on the locking rod and meanswhereby the locking rod ma moved to position its stop in or out o thepath of the stop on the bolt, .to lock the bolt t' against inwardmovement.

7. In a device of the character described, a latch bolt and an operatingrod therefor slidable in intersecting planes, a double acting stop onthe bolt, a locking rod slidably mounted on lthe operating rod andhaving a stop,l and means whereby the locking rod may be moved to causeits stopV to contact with said double acting stop whereby movemcnt ot'the bolt land the locking rod is limited.

S. In a device of the character described, a. latch bolt and anoperating rod therefor slidable in intersecting planes, a. double actingstop on the bolt, a guideway ,on the operating rod, a locking rodslidable in the guideway and haring a stop coacting with y the doubleacting stop, a second stop on one end oi the lockingrod and adapted tolimit the movement thereofl in one direction, and' means wherebythelocking rod may be moved to cause-lts iirst mentioned stop to contactWiththe double acting 'stop'therebyl 9. In a device of thecharacterdescribed,

bey

a latch bolt and al longitudinally grooved operating rod slidable inintersecting planes, said operating rod havinga notch in one end andextending outwardly from. its groo\'e a lockinggrod slidable in thegroove and .having a stop projecting into the notch, and means wherebythe .locking rod may be moved in the groove. l

10. The combination with a latch bolt and an operating rod' slidable .inintersecting planes and means whereby reciprocation of y the latterwillbe imparted to the former, of a stop carried by said bolt and movableinwardly and outwardly therewith, a guide carried' by the operating rod,a locking rod slidably and non-rotatably mounted -in said guide, and astop on said Alocking rod to be positioned in. the inward path of thestop on the bolt .to prevent the retraction oi." the latter.

4 11.^'1`he combination witlra bolt andan -i and outwardly therewith, `alocking rod slidably and non-rotatably mounted in said groove, and astop on said rod to be positioned in the inward path ofthe stop on thebolt whereby to prevent retraction of the latter.

In testimony whereof we have hereunto ing witnesses.

JAMES WV. CLEMMER. Y ANDREW ROSENDAHL. ALBERT N. HALVORSON. Witnesses:

` A A. T. COLE, BERTHA OLsoN.

set our hands'in presence of .two subscrib.- 75

